package com.tongsys.server.config.security.handler;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.tongsys.server.utils.RtnUtils;
import com.tongsys.server.utils.RtnCode;
import io.swagger.annotations.ApiModel;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.web.access.AccessDeniedHandler;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.nio.charset.StandardCharsets;

@Component
@ApiModel("认证用户访问无权限资源时的 处理器类")
public class CustomerAccessDeniedHandler implements AccessDeniedHandler {
    @Override
    public void handle(HttpServletRequest request, HttpServletResponse response, AccessDeniedException accessDeniedException) throws IOException, ServletException {
        //设置响应的编码格式
        response.setContentType("application/json;charset=utf-8");
        //获取输出流
        ServletOutputStream outputStream = response.getOutputStream();
        //无权限访问输出，并消除循环引用
        String res= JSON.toJSONString(RtnUtils.err().code(RtnCode.NO_AUTH).msg("无权限，请联系管理员"), SerializerFeature.DisableCircularReferenceDetect);
        outputStream.write(res.getBytes(StandardCharsets.UTF_8));
        outputStream.flush();
        outputStream.close();
    }
}
